Neotropical Entomology (2019) 48, 966-973
F.P. Pereira, C. Reigada, A.J.F. Diniz and J.R.P. Parra (2019)
Potential of two Trichogrammatidae species for Helicoverpa armigera control
Neotropical Entomology 48 (6), 966-973
Abstract: Helicoverpa armigera (Hübner) has attacked several economically important crops since it was first reported in Brazil in 2013. Because insecticides have been used intensively to control H. armigera, resistant populations have been detected more frequently. One alternative to insecticides is the use of biological control with egg parasitoids from the family Trichogrammatidae (Hymenoptera). The present study evaluated the use of different species and strains of these parasitoids to control H. armigera in soybean. Five strains of Trichogramma pretiosum (Riley): RV (Rio Verde, Goiás, Brazil), SO (Sorriso, Mato Grosso, Brazil), 47A (Irvine, CA, USA), PR (Colombo, Paraná, Brazil), and AN (Anhumas, São Paulo, Brazil), and Trichogrammatoidea annulata (De Santis) denominated TR, from Anhumas, were used. The following parasitoid biological parameters were evaluated: parasitism rates (%), offspring viability (%) number of parasitoids emerged per egg, egg-adult duration (days), female longevity, and offspring sex ratio. Strain RV of T. pretiosum from central Brazil performed best.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Carolina Reigada
Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
Pest and/or beneficial records:
| Beneficial | Pest/Disease/Weed | Crop/Product | Country | Quarant.
|
|---|---|---|---|---|
| Helicoverpa armigera | Brazil (south) | |||
| Trichogramma pretiosum (parasitoid) | U.S.A. (SW) | |||
| Trichogramma pretiosum (parasitoid) | Brazil (NW) | |||
| Trichogramma pretiosum (parasitoid) | Helicoverpa armigera | Brazil (south) | ||
| Trichogrammatoidea annulata (parasitoid) | Helicoverpa armigera | Brazil (south) |
